Brother HL-L3230CDN User Manual

Confidential
MODEL
March 2018
SM-PRN118
84E7*
Ver.1
Brother Laser Printer
SERVICE MANUAL
HL-3160CDW/3190CDW/L3210CW
HL-L3230CDN/L3230CDW/L3270CDW
Read this manual thoroughly before maintenance work.
Keep this manual in a convenient place for quick and easy reference at all times.

Brother HL-L3230CDN Specifications

General

Resolution	Up to 2400 x 600 dpi
Monthly Duty Cycle	Up to 30, 000 pages
Memory	256 MB
Operating Systems Supported	Windows, macOS, Linux
Printer Type	Color Laser
Duplex Printing	Automatic
Paper Input Capacity	250 sheets
Connectivity	USB, Ethernet
Mobile Printing	Brother iPrint&Scan, AirPrint, Google Cloud Print

Summary

Chapter 2 Error Indication and Troubleshooting

1.1 Precautions

1.2 Checks before Commencing Troubleshooting

3. ERROR INDICATIONS

Details error codes and messages indicating machine malfunctions.

4. TROUBLESHOOTING

Guides on diagnosing and resolving common machine errors and problems.

Chapter 3 Disassembly/Reassembly

1. SAFETY PRECAUTIONS

Critical safety warnings and precautions for disassembly and reassembly work.

8. DISASSEMBLY FLOW

9. DISASSEMBLY PROCEDURE

Detailed step-by-step instructions for disassembling machine parts.

Chapter 4 Adjustments and Updating of Settings, Required After Parts Replacement

1. IF YOU REPLACE THE MAIN PCB

Procedure for configuring settings after replacing the main PCB.

2. IF YOU REPLACE THE REGISTRATION MARK SENSOR ASSY OR LED ASSY

3. IF YOU REPLACE THE LOW-VOLTAGE POWER SUPPLY PCB

4. IF YOU REPLACE THE TOP COVER ASSY, LCD, LCD PANEL ASSY OR PANEL PCB

5. IF YOU REPLACE THE FUSER UNIT

Procedure for resetting the fuser unit page counter after replacement.

6. IF YOU REPLACE A PF KIT

Procedure for resetting the PF kit page counter after replacement.

Chapter 5 Service Functions

1. MAINTENANCE MODE

Explanation of the maintenance mode and how to enter it.

1.2 List of Maintenance Mode Functions

A comprehensive list of maintenance mode functions and their references.

1.3 Details of Maintenance Mode Functions

Chapter 6 Wiring Diagram

1. WIRING DIAGRAM

Chapter 7 Periodical Maintenance

1. PRECAUTIONS

2. PERIODICAL REPLACEMENT PARTS

Appendix 3 Installing the Maintenance Printer Driver

Windows 7/Windows 8/Windows 8.1/Windows 10